/* ═══════════════════════════════════════════════════════════════
   MINT newsletter brand — Yesterday in AI (web surfaces)
   Editorial sub-brand of mintresearch.org. Loads AFTER /assets/theme.css
   and consumes its tokens (dark default; html[data-theme="light"] = paper).
   Newsletter pages default to the paper theme via markup + a pre-paint
   script; the stored site preference (localStorage "mint-theme") wins.
   No hardcoded colors here — tokens only, so both themes just work.
   (One deliberate exception: the scanlines overlay below is copied
   byte-for-byte from the site's global.css, black-alpha literals and
   all, so the film matches the main site exactly.)
   Consumers: issue index + article pages (render.py) and the daily
   digest page (digest_page_template.html).
   ═══════════════════════════════════════════════════════════════ */

/* ── 1. Scaffold ───────────────────────────────────────────────── */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg-1);
  color: var(--text-bright);
  font-family: Georgia, 'Iowan Old Style', Palatino, serif;
  font-size: 17px;
  line-height: 1.7;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

/* Scanlines overlay (CRT effect) — copied verbatim from the main site's
   src/styles/global.css so newsletter pages carry the same film. Fixed,
   full-viewport, pointer-events none: no effect on selection, clicks, or
   the theme toggle. theme.css (loaded before this file) already softens
   it on paper via its html[data-theme="light"] body::after override —
   same stripes, lower alpha — so both themes match the site. Web pages
   only: email never loads this stylesheet. */
body::after {
  content: '';
  position: fixed; top: 0; left: 0;
  width: 100vw; height: 100vh;
  pointer-events: none; z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}
/* Reading column. theme.css pushes `main` down below the site banner
   (margin-top: var(--banner-h)); newsletter pages have no banner, so
   neutralize that here. */
main.nl-page {
  margin: 0 auto;
  min-height: 0;
  width: 100%;
  max-width: 680px;
  padding: 30px 20px 56px;
  flex: 1;
  /* The issue page collapses/expands whole story reports in place;
     browser scroll anchoring fights the scripted scroll-backs. */
  overflow-anchor: none;
}

/* Shared mono stack for all UI text (kickers, meta, bylines, chips,
   boxes, footer). Body copy stays serif — readability wins. */
.nl-kicker, .byline, .chip, .folio, .section-head, .readmore,
.sources, .how-reported, .disclosure, .nl-exit, .nl-footer, .nl-hero-meta,
.readmore-toggle, .expansion-label, .expansion-collapse, .issue-note {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, Menlo, Consolas, monospace;
}

/* ── 2. Links — site accent with the faint-underline treatment ─── */
a { color: var(--accent); text-decoration: none; }
.article-body a, .sources a, .blurb a {
  text-decoration: underline;
  text-decoration-color: var(--accent-dim);
  text-underline-offset: 2px;
}
.article-body a:hover, .sources a:hover, .blurb a:hover {
  color: var(--accent-bright);
  text-decoration-color: var(--accent-bright);
}
.readmore a:hover, .nl-exit a:hover, .nl-footer a:hover,
.nl-kicker a:hover { text-decoration: underline; }

/* ── 3. Branded header (slim strip, not the site sidebar) ──────── */
.nl-header { border-bottom: 1px solid var(--border); }
.nl-header-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 18px 20px 14px;
}
.nl-wordmark { display: inline-flex; }
.nl-wordmark img { height: 28px; width: auto; display: block; }
.nl-kicker {
  margin: 10px 0 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
}
.nl-kicker a { color: var(--accent); }
/* Issue pages (Seth, 2026-07-16): ONE header — the kicker IS the page h1
   (render.py emits <h1 class="nl-kicker nl-kicker-mast">), sized up to
   masthead weight; the serif date h1 is retired there. Same mono,
   uppercase, letterspaced, accent identity — just bigger. Article pages
   keep the small <p> kicker above their own serif hed. */
h1.nl-kicker-mast {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 1.5px;
  line-height: 1.3;
}

/* ── 4. Editorial typography (serif heds/deks/body) ────────────── */
h1.hed { font-size: 31px; line-height: 1.15; margin: 0 0 14px; font-weight: 700; }
p.dek {
  font-style: italic; font-size: 18.5px; color: var(--text-1);
  line-height: 1.5; margin: 0 0 22px;
}
.article-body p { margin: 0 0 1.3em; }
.article-body h3 {
  font-family: Georgia, 'Iowan Old Style', Palatino, serif;
  font-size: 21px; line-height: 1.3; margin: 1.6em 0 0.6em; font-weight: 700;
}
h1.mast { font-size: 36px; line-height: 1.12; margin: 0 0 12px; font-weight: 700; }
h1.mast em { font-weight: 400; }
/* Standing intro (issue pages) — distinct from the digest body (Seth,
   2026-07-16, "like before": the retired folio was mono/muted): italic
   serif, slightly smaller and muted, hairline rule before the digest
   begins. Works in both themes — tokens only. */
.nl-intro {
  margin: 14px 0 0;
  padding: 0 0 18px;
  border-bottom: 1px solid var(--border);
  font-style: italic;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-2);
}
.nl-intro p { margin: 0 0 0.9em; }
.nl-intro p:last-child { margin-bottom: 0; }

/* ── 5. Mono meta rows (byline, chip, folio) ───────────────────── */
.byline {
  font-size: 11px; letter-spacing: 0.5px; text-transform: uppercase;
  color: var(--text-2);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 9px 0; margin: 0 0 28px;
  display: flex; flex-wrap: wrap; gap: 8px 14px;
  align-items: center; justify-content: space-between;
}
.chip {
  font-size: 10px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase;
  color: var(--accent); background: var(--accent-soft);
  border: 1px solid var(--border); border-radius: 3px;
  padding: 3px 8px; white-space: nowrap;
}
.folio {
  font-size: 11.5px; letter-spacing: 0.3px; color: var(--text-2);
  margin: 0; padding: 0 0 16px; border-bottom: 1px solid var(--border);
}

/* ── 6. Section heads — site h2 convention: mono uppercase over a
        hairline rule in var(--border) ─────────────────────────── */
.section-head {
  font-size: 13px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  color: var(--accent);
  border-top: 1px solid var(--border);
  padding-top: 10px; margin: 40px 0 4px;
}

/* ── 7. Issue index stories ────────────────────────────────────── */
.story { margin: 20px 0 26px; }
.story h3 { font-size: 22px; line-height: 1.2; margin: 0 0 8px; font-weight: 700; }
.story h3 a { color: inherit; }
.story h3 a:hover { text-decoration: underline; text-decoration-color: var(--accent); }
.story .blurb { font-size: 16.5px; margin: 0 0 8px; }
.readmore { font-size: 12px; letter-spacing: 0.3px; margin: 0; }

/* ── 8. Sources & how-reported boxes — bg-2 cards, hairlines,
        mono labels ──────────────────────────────────────────────── */
.sources, .how-reported {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 16px 18px;
  font-size: 12.5px; line-height: 1.6;
}
.sources { margin: 38px 0 0; }
.how-reported { margin: 14px 0 0; }
.sources h2, .how-reported h2 {
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; margin: 0 0 10px;
}
.sources h2 { color: var(--text-2); }
.how-reported h2 { color: var(--accent); }
.sources ul { margin: 0; padding-left: 18px; }
.sources li { margin: 0 0 9px; }
.sources li:last-child { margin-bottom: 0; }
.sources .how { color: var(--text-2); }
.how-reported p { margin: 0; color: var(--text-1); }

/* ── 9. Exit affordances (article pages: back + continue; index:
        all newsletters). Prominent mono nav row above the footer. ── */
.nl-exit {
  margin-top: 44px; padding: 14px 0 0;
  border-top: 1px solid var(--border);
  font-size: 13px; font-weight: 600; letter-spacing: 0.3px;
  display: flex; flex-wrap: wrap; gap: 10px 18px;
  align-items: center; justify-content: space-between;
}
.nl-exit a { white-space: nowrap; }

/* Front-page disclosure */
.disclosure {
  margin-top: 44px; padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 11px; line-height: 1.6; color: var(--text-2);
}

/* ── 10. Footer strip — statusline echo (full-width, bg-0, mono) ── */
.nl-footer {
  background: var(--bg-0);
  border-top: 1px solid var(--border);
  font-size: 11px; color: var(--text-3);
  padding: 8px 14px;
  padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px));
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
}
.nl-footer-minty {
  width: 16px; height: 16px;
  image-rendering: pixelated; opacity: 0.6; flex-shrink: 0;
}
.nl-footer-site { color: var(--accent); white-space: nowrap; }
.nl-footer-section {
  color: var(--text-2); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.nl-footer .theme-toggle { margin-left: auto; }
/* .theme-toggle itself is styled by theme.css; the label is painted by the
   page's inline script, so hide the empty shell when JS is off */
.nl-footer .theme-toggle:empty { display: none; }

/* ── 11. Daily digest page (digest_page_template.html) ─────────── */
.nl-hero { margin: 0 0 10px; }
.nl-hero h1 { font-size: 34px; line-height: 1.12; margin: 0 0 10px; font-weight: 700; }
.nl-hero h1 em { font-weight: 400; }
.nl-hero-meta {
  font-size: 11.5px; letter-spacing: 0.3px; color: var(--text-2);
  margin: 0; padding: 0 0 16px; border-bottom: 1px solid var(--border);
}
.nl-digest-content { margin-top: 24px; }
.nl-digest-content h2 {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, Menlo, Consolas, monospace;
  font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  color: var(--accent); border-top: 1px solid var(--border);
  padding-top: 10px; margin: 40px 0 12px;
}
.nl-digest-content h3 { font-size: 20px; line-height: 1.25; margin: 1.4em 0 0.5em; }
.nl-digest-content p { margin: 0 0 1.2em; }
.nl-digest-content a {
  text-decoration: underline;
  text-decoration-color: var(--accent-dim);
  text-underline-offset: 2px;
}
.nl-digest-content a:hover { color: var(--accent-bright); text-decoration-color: var(--accent-bright); }

/* ── 12. Issue-page story expansions — each reported story's digest
        paragraph ends with a "Read more →" toggle; the full piece sits
        directly after it in a collapsed <details class="story-expansion"
        id="story-{slug}"> card (bg-2, accent left rule, mono chrome,
        serif body). Native <summary> keeps expansion JS-free; the page's
        inline script adds toggle/deep-link behavior. ─────────────────── */
.readmore-toggle {
  font-size: 12px; font-weight: 600; letter-spacing: 0.3px;
  white-space: nowrap;
}
.nl-digest-content a.readmore-toggle { text-decoration: none; }
.nl-digest-content a.readmore-toggle:hover { text-decoration: underline; }
details.story-expansion {
  margin: 10px 0 28px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  scroll-margin-top: 18px;
}
details.story-expansion > summary {
  cursor: pointer;
  list-style: none;
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px;
  padding: 11px 16px;
}
details.story-expansion > summary::-webkit-details-marker { display: none; }
details.story-expansion > summary::before { content: "▸"; color: var(--accent); }
details.story-expansion[open] > summary::before { content: "▾"; }
details.story-expansion[open] > summary {
  border-bottom: 1px solid var(--border);
  padding: 14px 18px;
}
.expansion-label {
  font-size: 10px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--accent);
}
.expansion-hed {
  font-family: Georgia, 'Iowan Old Style', Palatino, serif;
  font-size: 16.5px; line-height: 1.35; font-weight: 700;
  color: var(--text-bright);
}
details.story-expansion[open] .expansion-hed { font-size: 20px; }
.expansion-inner { padding: 18px 20px 16px; }
details.story-expansion p.dek { font-size: 17px; margin: 0 0 18px; }
details.story-expansion .article-body { font-size: 16.5px; }
details.story-expansion .sources,
details.story-expansion .how-reported { background: var(--bg-1); }
details.story-expansion .sources { margin: 26px 0 0; }
.expansion-collapse {
  margin: 16px 0 0; font-size: 12px; font-weight: 600;
  letter-spacing: 0.3px; text-align: right;
}

/* Article pages: one-line mono pointer to the piece's slot in the issue */
.issue-note { margin: 26px 0 0; font-size: 12px; letter-spacing: 0.3px; color: var(--text-2); }

/* ── 13. Small screens ─────────────────────────────────────────── */
@media (max-width: 720px) {
  main.nl-page { padding: 24px 16px 48px; }
  .nl-header-inner { padding: 14px 16px 12px; }
  h1.hed { font-size: 27px; }
  h1.mast { font-size: 30px; }
  h1.nl-kicker-mast { font-size: 17px; }
  .nl-hero h1 { font-size: 29px; }
  details.story-expansion[open] > summary { padding: 12px 16px; }
  .expansion-inner { padding: 16px 16px 14px; }
}

/* --- 13. Mobile overflow guards (Seth, 2026-07-15): labeled read-more
   toggles must wrap like text, never widen the page; belt: no lateral
   scroll ever. --- */
.nl-digest-content a.readmore-toggle,
a.readmore-toggle,
.readmore-toggle { white-space: normal !important; overflow-wrap: anywhere; }
.nl-kicker, .nl-footer, .nl-exit-nav { overflow-wrap: anywhere; }
html, body { overflow-x: hidden; }